:root {
    --primary-color: #cd7f32; /* Bronze */
    --primary-dark: #a05a2c;
    --secondary-color: #2c3e50; /* Anthracite */
    --accent-color: #b08d57; /* Metallic Bronze */
    --text-dark: #ffffff;
    --text-light: #b0b0b0;
    --bg-light: #2a2a2a;
    --bg-dark: #121212;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

body {
    font-family: var(--font-body);
    color: var(--text-light);
    background-color: var(--bg-dark);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.text-bronze { color: var(--primary-color) !important; }
.bg-bronze { background-color: var(--primary-color) !important; }

.btn-bronze {
    background-color: var(--primary-color);
    color: #fff;
    border: 1px solid var(--primary-color);
    transition: all 0.3s ease;
    border-radius: 0;
    padding: 15px 35px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-bronze:hover {
    background-color: transparent;
    color: var(--primary-color);
}

.btn-outline-bronze {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
    border-radius: 0;
    padding: 14px 35px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-outline-bronze:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* Navbar */
.navbar-custom {
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(205, 127, 50, 0.3);
    padding: 20px 0;
    transition: all 0.4s ease;
}

.navbar-custom.scrolled {
    padding: 10px 0;
    background-color: rgba(18, 18, 18, 1);
    box-shadow: 0 5px 20px rgba(0,0,0,0.5);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--text-dark) !important;
    letter-spacing: 3px;
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 13px;
    margin: 0 15px;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(rgba(18, 18, 18, 0.7), rgba(18, 18, 18, 0.9)), url('/demos/construction/images/hero.webp') no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: slideInLeft 1.5s ease;
}

.hero-title {
    font-size: 5rem;
    line-height: 1.1;
    margin-bottom: 25px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}

/* Architecture Cards */
.arch-card {
    background-color: var(--bg-light);
    border: none;
    border-radius: 0;
    transition: all 0.5s ease;
    overflow: hidden;
    position: relative;
}

.arch-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
    z-index: 1;
}

.arch-card:hover::before {
    transform: scaleX(1);
}

.arch-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.arch-icon {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Stats */
.stat-box {
    text-align: center;
    padding: 40px 20px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(42,42,42,0.5);
}
.stat-number {
    font-size: 3rem;
    color: var(--primary-color);
    font-family: var(--font-heading);
    font-weight: 800;
    margin-bottom: 10px;
}

/* Forms */
.form-control, .form-select {
    border-radius: 0;
    padding: 15px 20px;
    border: 1px solid rgba(255,255,255,0.1);
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-family: var(--font-body);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    background-color: var(--bg-dark);
    color: var(--text-dark);
    box-shadow: none;
}

/* Animations */
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}